My first guess is that you tried to use Mean before loading the package
DescriptiveStatistics, and you ran into a shadowing problem. Try a new
session and load the package before attempting to use any of its functions.
It works all right. Whenever you get into this problem, i,e,, calling a
function prior to loading the respective package, use Remove to remove the
name of the function and then try again.
In[1]:=
<< "Statistics`DescriptiveStatistics`"
In[2]:=
data = {4.3, 7.2, 8.4, 5.8, 9.2, 3.9}
Out[2]=
{4.3, 7.2, 8.4, 5.8, 9.2, 3.9}
In[3]:=
Mean[data]
Out[3]=
6.466666666666666
In[4]:=
Variance[data]
Out[4]=
4.6946666666666665
Tomas Garza
Mexico City
----- Original Message -----
From: "poonam" <poonam_pandey at hotmail.com>
To: mathgroup at smc.vnet.net
Subject: [mg32991] [mg32981] Mean
> << Statistics`DescriptiveStatistics`
>
> data = {4.3, 7.2, 8.4, 5.8, 9.2, 3.9}
> {4.3, 7.2, 8.4, 5.8, 9.2, 3.9}
>
> Mean[data]
> Mean[{4.3, 7.2, 8.4, 5.8, 9.2, 3.9}]
>
> Variance[data]
> 4.69467
>
> I took this code exactly as in the help browser. Tried this in my
> notebook. Why do I not get an answer for Mean? I get an answer for
> Variance, and I also see an answer for Mean in the help browser for
> the same data.
>